diff options
author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:31:44 -0800 |
---|---|---|
committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:31:44 -0800 |
commit | 9066cfe9886ac131c34d59ed0e2d287b0e3c0087 (patch) | |
tree | d88beb88001f2482911e3d28e43833b50e4b4e97 /core/java/android/widget/BaseAdapter.java | |
parent | d83a98f4ce9cfa908f5c54bbd70f03eec07e7553 (diff) | |
download | frameworks_base-9066cfe9886ac131c34d59ed0e2d287b0e3c0087.zip frameworks_base-9066cfe9886ac131c34d59ed0e2d287b0e3c0087.tar.gz frameworks_base-9066cfe9886ac131c34d59ed0e2d287b0e3c0087.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'core/java/android/widget/BaseAdapter.java')
-rw-r--r-- | core/java/android/widget/BaseAdapter.java | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/core/java/android/widget/BaseAdapter.java b/core/java/android/widget/BaseAdapter.java new file mode 100644 index 0000000..532fd76 --- /dev/null +++ b/core/java/android/widget/BaseAdapter.java @@ -0,0 +1,80 @@ +/* + * Copyright (C) 2007 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package android.widget; + +import android.database.DataSetObservable; +import android.database.DataSetObserver; +import android.view.View; +import android.view.ViewGroup; + +/** + * Common base class of common implementation for an {@link Adapter} that can be + * used in both {@link ListView} (by implementing the specialized + * {@link ListAdapter} interface} and {@link Spinner} (by implementing the + * specialized {@link SpinnerAdapter} interface. + */ +public abstract class BaseAdapter implements ListAdapter, SpinnerAdapter { + private final DataSetObservable mDataSetObservable = new DataSetObservable(); + + public boolean hasStableIds() { + return false; + } + + public void registerDataSetObserver(DataSetObserver observer) { + mDataSetObservable.registerObserver(observer); + } + + public void unregisterDataSetObserver(DataSetObserver observer) { + mDataSetObservable.unregisterObserver(observer); + } + + /** + * Notifies the attached View that the underlying data has been changed + * and it should refresh itself. + */ + public void notifyDataSetChanged() { + mDataSetObservable.notifyChanged(); + } + + public void notifyDataSetInvalidated() { + mDataSetObservable.notifyInvalidated(); + } + + public boolean areAllItemsEnabled() { + return true; + } + + public boolean isEnabled(int position) { + return true; + } + + public View getDropDownView(int position, View convertView, ViewGroup parent) { + return getView(position, convertView, parent); + } + + public int getItemViewType(int position) { + return 0; + } + + public int getViewTypeCount() { + return 1; + } + + public boolean isEmpty() { + return getCount() == 0; + } +} |